PCIe-S142i PCI Express, Serial Communication Board with 2 Isolated RS-422/485 ports


Key Features

  • Supports PCI Express x1
  • Provides 2 RS-422/485 ports
  • 256 KB Software Buffer (max.) for Each COM Port Under Windows
  • 128-byte Hardware FIFO for Each Port
  • ±4 kV ESD Protection for i versions
  • 3000 VDC Isolation for i versions
  • Short Card Design


The ICP DAS PCIe-S142 series card provides 2 RS-422/RS-485 serial ports. Each port can be configured as either RS-485 for half-duplex or RS-422 for full-duplex communication. It supports for speed up to 921600 bps and supports full-duplex communication. Users may specify a COM port number manually by setting DIP switch, or let the driver choose an available number automatically. The driver provides a maximum of 128 KB software FIFO for each COM port under Windows. It’s practical for large file transmission.

The ICP DAS PCIe-S142i card come with photo-couplers design. The on-board photo couplers use a short optical transmission path to transfer a signal between elements of a circuit, and keep the data lines electrically isolated. It can help cutting down on ground loops, common mode voltages and block voltage spikes, provide electrical isolation, and offer significant protection from serious over-voltage conditions in one circuit affecting the other.

In harsh industrial environments, the on-board ESD protection component (PCIe-S142i) diverts the potentially damaging charge away from sensitive circuit to protects the computer and equipment from the sudden and momentary electric current. The serial communication card are designed for use with intelligent devices like bar code reader, serial printers, intelligent sensors, instrumentation equipment, and computers.

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